CSP41, a sequence-specific chloroplast mRNA binding protein, is an endoribonuclease.

CSP41, a sequence-specific chloroplast mRNA binding protein, is an endoribonuclease.
复制标题

CSP41是一种序列特异性叶绿体mRNA结合蛋白,是一种内核酸酶。

DOI:
10.1105/tpc.8.8.1409
复制
发表时间:
1996
期刊:
The Plant cell
影响因子:
--
通讯作者:
Stern,DB
Stern,DB
中科院分区:
--
文献类型:
--
作者:
Yang,J;Schuster,G;Stern,DB

文献摘要

参考文献

被引文献

相似文献

叶绿体前体mRNAs(前mRNAs)的正确3‘处理需要在3’非翻译区内有一个茎环结构。在菠菜中,编码细胞色素b6/f复合体IV亚基的PETD前-mRNA和叶绿体蛋白在体外形成了稳定的3‘茎-环-蛋白复合体。该复合体含有三个叶绿体茎环结合蛋白(CSPs),即CSP29、CSP41和CSP55。在这里,我们报道了CSP41的纯化和CSP41基因的克隆,结果表明CSP41是由单个核基因编码的。对细菌表达的CSP41的鉴定表明,该蛋白特异性地与PETD Pre-mRNA的3‘茎环结构和下游富含AU的元件结合,并通过与CSP55的结合而增强了结合亲和力。我们的数据还表明,CSP41具有大量的非特异性内切核酸酶活性。这些数据表明,CSP41可能参与了PETD Pre-mRNA的3‘端加工和/或RNA的降解。不同的反应条件有利于RNA结合而不是核糖核酸酶活性,这一事实表明了一种可能的体内调节模式。
Correct 3' processing of chloroplast precursor mRNAs (pre-mRNAs) requires a stem-loop structure within the 3' untranslated region. In spinach, a stable 3' stem-loop-protein complex has been shown to form in vitro between petD pre-mRNA, encoding subunit IV of the cytochrome b6/f complex, and chloroplast proteins. This complex contains three chloroplast stem-loop binding proteins (CSPs), namely, CSP29, CSP41, and CSP55. Here, we report the purification of CSP41 and cloning of the csp41 gene and show that CSP41 is encoded by a single nuclear gene. Characterization of bacterially expressed CSP41 demonstrates that this protein binds specifically to the 3' stem-loop structure and a downstream AU-rich element of petD pre-mRNA and that its binding affinity is enhanced by associating with CSP55. Our data also show that CSP41 has substantial nonspecific endoribonuclease activity. These data suggest that CSP41 could be involved in 3' processing of petD pre-mRNA and/or in RNA degradation. The fact that different reaction conditions favor RNA binding over ribonuclease activities suggests a possible mode of in vivo regulation.
DOI: --
发表时间: 1993
期刊: European Journal of Biochemistry
影响因子: --
作者:
C. Subbaiah;K. Tewari
通讯作者: K. Tewari
细菌功能性 mRNA 稳定性的控制:溶核和非溶核失活的多种机制
DOI: --
发表时间: 1992
影响因子: 3.6
作者:
C. Petersen
通讯作者: C. Petersen
编码大肠杆菌核糖体蛋白 S15 的 mRNA 的衰变是由 RNase E 依赖性核酸内切裂解引发的,该裂解去除了 3 稳定茎和环结构。
DOI: --
发表时间: 1991
影响因子: 5.6
作者:
P. Régnier;E. Hajnsdorf
通讯作者: E. Hajnsdorf
DOI: 10.1074/jbc.271.1.432
发表时间: 1996-01-05
影响因子: 4.8
作者:
Boeck, R;Tarun, S;Sachs, AB
通讯作者: Sachs, AB
DOI: --
发表时间: 1989
影响因子: 4.8
作者:
David B. Stern;H. Jones;Wilhelm Gruissem
通讯作者: Wilhelm Gruissem